Die for making rolled forcings



(No ModeL) G; P. SIMONDS.v

DIE FOR MAKING ROLLED FORGINGS N0. 358.628 Patented Mar. 1, 1887.

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GEORGE F. SIMONDS, OF FITGHBURG, MASSACHUSETTS.

DIE FOR MAKING ROLLED FORGINGS.

SPECIFICATION forming part of Letters Patent No. 358,628, dated March 1, 1887.

Appli 'ation filed August 19, 1886. Serial No. 211,297.

To all whom, it may concern:

Be it known that I, GEORGE F. SnuoNDs, of Fitchburg, in the county of Worcester and State of Massachusetts, have invented certain Improvements on Dies for Making Rolled Forgings; and I hereby declare the following to be afu ll, clear, and exact description thereof, reference being had to the accompanying d rawings, making a part of this specification, in which- Figure 1 is. a perspective view of my improved die. Fig. 2 illustrates the die as formerly constructed and the waste of stock by its use, the change to my present invention being shown in dotted lines. Fig. 3 is a section on line 00 a: of Fig. 1, and an illustration showing the saving of stock.

My invention relates to dies such as are desi ned to be used in the machine for making wrought-metal forgings described and shown in Letters Patent of the United States No. 319,752, issued to me June 9, 1885, and has for its object to produce a die which will reduce the waste of stock to a minimum and at the same time, incidentally, greatly reduce the frictional strain on dies for making conical projectiles, my improved die being especially adapted for that purpose.

My invention is an improvement on the die shown and described in United States Letters Patent No. 319,756, issued to me June 9, A. D. 1885; and it consists in providing that spreading-surface of the die where the base of the projectile is formed with an extended face on such an angle as to closely approximate the line of the curve of the die which forms the point of the projectile, as will be hereinafter fully described, and specifically pointed out in the claim.

Practical experience demonstrated it to be highly desirable that the waste of the stock in the use of dies made according to my Patent No. 319,756 should be reduced. below the amount seemingly necessitated by the construction of such dies, the waste being about in the proportion seen in Fig. 2. I discovered that by extending the spreading and reducing surface adjacent to the wall of the die which forms the base of the shot, so that it merges with the plate of the die-say at about (No model.)

an angle of twenty-five degreesthe end of the bar or stock will receive. a preliminary conical rolling especially adapted to take the ultimate form of the projectile-point without any considerable waste of stock, this reduc tion of waste being shown in Fig. 3 in corn parison to the waste, as shown in Fig. 2.-

In order that those skilled in the art may make and use myinvention, I will proceed to describe the exact manner in which I have carried it out.

In the said drawings, A is the die-plate or bed, a is the forming-surface of the die, and b bare the walls of the die, all constructedafter the manner described and claimed in my hereinbeforementioned Patent No. 319,756.

The wall I) gives form to the base of the shot and cuts off the stock. As the wall 6 rises to the point where decided work is being performed to shape the base of the shot, about at d, the outer surface of the wall is projected, as seen at c, to meet the plane of the baseA at about an angle of twenty-five degrees. This proportion is maintained as the wall l)- rises gradually toward the finishing end f of the die, where it will be found that the exterior or spreading surface 6 has reached such conformation as to leave the end of stock 9 in a conical shape closely approaching the exact form of the conical point of the finished proj ectilc. The variation between the end of the stock as remaining after the rolling of a projectile and the precise form to be given such end to form the succeeding shot is shown in dotted lines on the stock 0, Fig. 3.

In Fig. 2 is illustrated an end view of the conical shot-die as heretofore constructed and the change of form to my present invention indicated in dotted lines. In this same figure is illustrated, at h, the proportionate necessary waste in the old form of die, and in Fig. 3, at i, is illustrated the small amount of waste in the operation of my present invention. The saving afforded by this new die in waste stock will he therefore found a very material factor in the economical manufacture of conical projectiles.

The limited variations in the conical forms of the forward ends of the various kinds of conical projectiles should be followed. in the ICO lines of the face e in making" each variety of the base of the projectile andleave the end of 10 shot. the stock in a form closely approximating the Having thus described my new invention, form of the point of a finished projectile, subwhat I claim as new, and desire to secure by stantially as described.

5 Letters Patent, is-

A die for making rolled conical projectiles, SIMONDS' provided with a forming-surface, a, reducing Witnesses: and spreading surfaces to form the point, and FRANK W. PICKE LL, a reducing and spreading surface, a, to form WM. H. BATES. 

